In this article, we are going to see how to set the visibility of a canvas Polyline using FabricJS. The canvas means Polyline is movable and can be stretched according to requirement. Further, the Polyline can be customized when it comes to initial stroke color, fill color, stroke width, or size.
To make it possible we are going to use a JavaScript library called FabricJS. After importing the library using CDN, we will create a canvas block in the body tag which will contain our Polyline. After this, we will initialize instances of Canvas and Polyline provided by FabricJS and set the visibility of the canvas Polyline using visible property, and render the Polyline on the Canvas as given in the example below.
Syntax:
var polyline = new fabric.Polyline(Points, {
visible: boolean
}); Parameters: This property accepts a single parameter as mentioned above and described below:
- visible: It specifies the visibility of the object.
The below example illustrates the visible property in Fabric.js:
Example:
<!DOCTYPE html> <html>
<head>
<!-- Loading the FabricJS library -->
<script src=
</script>
</head>
<body>
<div style="text-align: center;width: 600px;">
<h1 style="color: green;">
GeeksforGeeks
</h1>
<b>
Fabric.js | Polyline visible Property
</b>
</div>
<canvas id="canvas"
width="600"
height="200"
style="border:1px solid #000000;">
</canvas>
<script>
// Initiate a Canvas instance
var canvas = new fabric.Canvas("canvas");
// Initiate a polyline instance
var polyline = new fabric.Polyline([
{ x: 200,
y: 10 },
{x: 250,
y: 50
}, {
x: 250,
y: 180
}, {
x: 150,
y: 180
}, {
x: 150,
y: 50
}, {
x: 200,
y: 10 }], {
stroke: 'green',
transparentCorners: false,
visible: false
});
// Render the polyline in canvas
canvas.add(polyline);
</script>
</body>
</html>
|
Output: